radeon legacy chips: tv dac bg/dac adj updates

COMBIOS - fallback to table values if there are no tv dac or lvds bios tables
ATOMBIOS - add support for looking up these values from the bios table

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 98904de63874..786632d3e378 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -824,6 +824,78 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
         return lvds;
 }
 
+struct radeon_encoder_primary_dac *
+radeon_atombios_get_primary_dac_info(struct radeon_encoder *encoder)
+{
+        struct drm_device *dev = encoder->base.dev;
+        struct radeon_device *rdev = dev->dev_private;
+        struct radeon_mode_info *mode_info = &rdev->mode_info;
+        int index = GetIndexIntoMasterTable(DATA, CompassionateData);
+        uint16_t data_offset;
+        struct _COMPASSIONATE_DATA *dac_info;
+        uint8_t frev, crev;
+        uint8_t bg, dac;
+        int i;
+        struct radeon_encoder_primary_dac *p_dac = NULL;
+
+        atom_parse_data_header(mode_info->atom_context, index, NULL, &frev, &crev, &data_offset);
+
+        dac_info = (struct _COMPASSIONATE_DATA *)(mode_info->atom_context->bios + data_offset);
+
+        if (dac_info) {
+                p_dac = kzalloc(sizeof(struct radeon_encoder_primary_dac), GFP_KERNEL);
+
+                if (!p_dac)
+                        return NULL;
+
+                bg = dac_info->ucDAC1_BG_Adjustment;
+                dac = dac_info->ucDAC1_DAC_Adjustment;
+                p_dac->ps2_pdac_adj = (bg << 8) | (dac);
+
+        }
+        return p_dac;
+}
+
+struct radeon_encoder_tv_dac *
+radeon_atombios_get_tv_dac_info(struct radeon_encoder *encoder)
+{
+        struct drm_device *dev = encoder->base.dev;
+        struct radeon_device *rdev = dev->dev_private;
+        struct radeon_mode_info *mode_info = &rdev->mode_info;
+        int index = GetIndexIntoMasterTable(DATA, CompassionateData);
+        uint16_t data_offset;
+        struct _COMPASSIONATE_DATA *dac_info;
+        uint8_t frev, crev;
+        uint8_t bg, dac;
+        int i;
+        struct radeon_encoder_tv_dac *tv_dac = NULL;
+
+        atom_parse_data_header(mode_info->atom_context, index, NULL, &frev, &crev, &data_offset);
+
+        dac_info = (struct _COMPASSIONATE_DATA *)(mode_info->atom_context->bios + data_offset);
+
+        if (dac_info) {
+                tv_dac = kzalloc(sizeof(struct radeon_encoder_tv_dac), GFP_KERNEL);
+
+                if (!tv_dac)
+                        return NULL;
+
+                bg = dac_info->ucDAC2_CRT2_BG_Adjustment;
+                dac = dac_info->ucDAC2_CRT2_DAC_Adjustment;
+                tv_dac->ps2_tvdac_adj = (bg << 16) | (dac << 20);
+
+                bg = dac_info->ucDAC2_PAL_BG_Adjustment;
+                dac = dac_info->ucDAC2_PAL_DAC_Adjustment;
+                tv_dac->pal_tvdac_adj = (bg << 16) | (dac << 20);
+
+                bg = dac_info->ucDAC2_NTSC_BG_Adjustment;
+                dac = dac_info->ucDAC2_NTSC_DAC_Adjustment;
+                tv_dac->ntsc_tvdac_adj = (bg << 16) | (dac << 20);
+
+        }
+        return tv_dac;
+}
+
 void radeon_atom_set_clock_gating(struct radeon_device *rdev, int enable)
 {
         DYNAMIC_CLOCK_GATING_PS_ALLOCATION args;